function hide_menu(a) { var b = document.getElementById(a); b.style.display = "none" } function display_menu(a, b) { var c = document.getElementById(b); c.style.display = ""; var d = findPos(a); c.style.left = d[0] + "px"; c.style.top = d[1] + "px" } function findPos(a) { var b = curtop = 0; if (a.offsetParent) { b = a.offsetLeft; curtop = a.offsetTop; while (a = a.offsetParent) { b += a.offsetLeft; curtop += a.offsetTop } } return [b, curtop] }